Power to spare. Great FM section, and one of the best units for vinyl. I sold a Mac unit to get this, and have never regretted it. New to this site and its been very helpful. I was given a Sansui DB to look at for repair.
I have done small repairs on LCD TV's like capacitor replacements and some smaller work on laptop motherboards so I guess that's why this person thought I could look at his Sansui receiver. The flashing red power light was the first thing I noticed and looked it up on here for possible causes. Seems resistors are the main cause from what I have read here. I took the advice of tbrander from a post he gave in to check the resistors on the board labeled F that stands upright towards the back of the receiver and pulls out of another board.
When I pulled it out and plugged the unit back in and powered on, the red flashing light went away and became green. I am assuming this means this small board is causing the issue?
I'm new to the resistor thing and have been looking at the ones tbrander suggested to replace. Just having a hard time matching up those color bands for the resistors specifications cause a few of them look worn and the colors may be off. Any help on determining these specs would be appreciated. Thus the need to determine these resistor values. What a great site Hi-Fi Engine is! I am a retired Computer Tech but don't have much Analog Receiver experience. I work on mostly Turntables and Tape decks for fun A friend "and GE Equipment fan-atic" sent me a friend to see if I could repair his s Sansui db with no lights and a weak and distorted left channel.
I found the schematic and service manual on your site - Great Copy by the way! If I plug in a set of headphones, with no speakers selected, the Tuner sounds great and the unit has a balanced output from both channels. Seems like the "Front end" is fine. If I select speakers A, for example, with a pair of 8 ohm Waldorfs attached, the Left channel crashes low level and distorted sound in both the Speakers and Headphones.
Michael, the owner, says he has had this unit since new and it has never been into a shop. They are called in the parts list for the db and db receivers. Also, there are no PNPs installed at all. I am trying to figure how this unit ever functioned properly???
Has anyone seen this kind of mix-up from Sansui? The model you are working on is probably the , not the DB. I suggest you post this at AudioKarma under the Sansui Forum.
You will get plenty of knowledgable help there. HifiEngine is a fabulous resource but the forum over there might get your question a little more attention. I don't have enough experience with the s to say for certain, but I suspect you are correct in your assumptions. You can get the proper replacement transistors from mouser.
I still have my db from when I bought it in Viet Nam in It needs some minor repair and I am thankful to this website for the manuals when I take it in for complete rehab soon. I used to have all original box, etc but lost in a multitude of moves since The thing about these old receivers is the tape monitor button. My 4 yr old Yamaha home theatre receiver does not have one which makes my Bose 's useless. Did not know this to be the case at purchase and I am very unhappy about that.
I am wondering if perhaps I might be able to use my as a slave amp connecting to my Yamahahahaa in order to use the s. Any ideas?
Gosh, I'm glad I found this site. Just stumbled on it and don't even know why I was searching db. Can't wait to get it up and running again. This is an awesome receiver. Beautiful engineering.
Wish I still had the speakers. That G above sounded just acceptable for the masses. My Sansui a sure don't got no ICs in it. I'm curious about the 5 star ratings here and would like to look further into when exactly it was made and see more about the without the dB.
I inherited this receiver from my Uncle when he passed away. My ex-husband and I had it hooked up to some Klipsch Cornwall speakers and it was amazing. My Aunt called and said she "found" some speakers in the garage. They are custom built DK speakers from a shop in Minneapolis in the 70's.
Apparently my uncle had the speakers built for the receiver. I cannot wait to hook these speakers up. It quit working, it lights up but no sound. It is at the repair shop now, hopefully in very capable hands. I told them, do whatever it takes to get it working again. I have my fingers and toes crossed and cannot wait to fill my house with the sound of this receiver again. Very excited to have found this website and the Sansui DB cult! One day it stopped making sound but all the lights worked If you could let me know what the problem was with yours maybe I can get a head start on fixing mine.
Thanks much, Irondoug1. I'm delighted to have found this site and have hope for resurrecting my db. I had been told it was not repairable but I simply have not had the heart to trash it; there's something sacrilegious about the thought of trashing this unit!
I've now downloaded the manuals thanks very much! I submit the following question: This unit was working well and then, it began a flashing red power light.
Any thoughts as to what I'm up against? Ken, In case you haven't resolved this issue, I may be able to help. These type of units are always repairable, its just that some people aren't familiar with them.
Sansui DB's were notorious for having small "Fusable type" resistors go bad on the small driver board which sits in front of the heat sink, and is held in by a 2 screws for a black cover, with a white molex connector on top. Heat over time causes these resistors to open, or increase in value, causing the problem you are experiencing. While there are other problems such as blown outputs, and fried driver boards, and bad protect circuits that can cause this flashing red light problem, my experience with DB's and db's are always with these resistors.
These resistors don't usually look burnt or bad, but they usually are. If you notice any visible burnt areas on the driver board, this can be a sign of deeper problems. My email is tbrander aol. Feel free to send me a mail if you need assitance, and I will give you a number to call, where I can walk you through the procedure, or maybe help you find a solution. Hello, thank Hifi Engine group. I have a Sansui DB. There are volts on the left channel. What can I do? Please help me? Thank you. Fasub, You can try following the suggestions I had given above about replacing resistors.
You should also use a multimeter to check that all output transistirs are OK, as well as the transistors on the driver board that you need to change resistors on. If you have never soldered, or desoldered components from circuit boards, I suggest you get help. There may be no better unit on the planet! Talk to Chris Ready at readyaudio he is amazing and can make your db much better than the day it left the factory.
Not cheap but worth it!! It will be the last unit you will ever need. Good luck. The speakers have 7" subwoofers in the bottom, 4" woofers in the top, and just under 2" tweeters in the middle see attached image. I don't have the console that goes with them because the speakers were given to me from a neighbor by themselves. Until I found my Sansui, no console I had could power them correctly.
The only flaw on it is that when I use the AUX input, the right channel cuts out. A few minutes ago, I downloaded the manual and found out how to use the PLAY input for tape players as an aux input instead, but I'd still like to know how I can fix the AUX problem correctly if anyone knows what I can do.
Awesome speakers! The amp may just be suffering the effects of creeping grunge. A simple cleaning can be very helpful. You need a flashlight, a couple of screwdrivers phillips and flathead , a car fuse puller it's a little clip that is invaluable and much better than prying a bit of glass out of some clipe toward your face , a microfiber towel and an extra piece for wiping up excess cleaner, some cotton swabs and a nice secure cup to collect all the screws.
You can practice rhythms with the DB set to respond to the sound from drums, practice pads,. You can use this in Coach mode. Starts and stops the metronome, Loop Play, reference tone and Rhythm Coach. Press the button to switch among the four practice modes.
Set the pad sensitivity and Time Check difficulty settings here. Adjust the volume of the accent on the first beat and the volume of each rhythm. Master Volume slider. Information in the display is changed depending on the modes.
You can use a foot switch to shift the memories up and down. You can use a foot switch to start and stop the metronome, Loop Play, reference note, and Rhythm Coach. Connect headphones here. If this happens, use connection cables that do not contain resistors, such as those from the. Adjusts the volume for the device connected to the input jack.
Cymbal stand attachment hole M6. Security Slot. To stop. You can set the tempo by pressing [TAP] button two or more times in Metronome mode; the tempo is set. You can also set the tempo with tap input in Coach mode. The volume for the accent on the first beat and for each rhythm is indicated on a five-level scale.
You can store the changed setting s to memory. The count is played for the set number of times,. Press [MUTE]. Press [MUTE] again. You can have metronome settings that are stored in memory automatically play back in sequence. Storing settings with various tempos and rhythms to different memories and then playing these. The memory is capable of storing 50 different metronome settings and ten reference tone settings. Text or numerals enclosed in square brackets [ ] indicates buttons; i.
TAP button. Press the button to switch among the four practice modes. This changes the tone used for the Beat you select. Changes the reference pitch. Set the pad sensitivity and Time Check difficulty settings here. Adjust the volume of the accent on the first beat and the volume of each rhythm. Information in the display is changed depending on the modes.
You can use a foot switch to shift the memories up and down. You can use a foot switch to start and stop the metronome, Loop Play, reference note, and Rhythm Coach. Connect headphones here. If this happens, use connection cables that do not contain resistors, such as those from the.
Adjusts the volume for the device connected to the input jack. To stop. You can select from four different tones only when "BEAT" is selected. You can set the tempo by pressing [TAP] button two or more times in Metronome mode; the tempo is set. You can set the tempo within the range of.
You can also set the tempo with tap input in Coach mode. The volume for the accent on the first beat and for each rhythm is indicated on a five-level scale. You can store the changed settings to memory. Refer to the section "Using the Memory," which follows.
You can have metronome settings that are stored in memory automatically play back in sequence.
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